*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}a:hover{color:#8ED8FF}img{max-width:100%;height:auto}button{font:inherit}button:focus-visible,a:focus-visible{outline:2px solid #8ED8FF;outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:#F5F7FA;line-height:1.38}h1{font-size:clamp(28px,3.2vw,42px)}h2{font-size:clamp(21px,2.15vw,27px)}h3{font-size:19px}p{margin-bottom:17px}.container{width:min(calc(100% - 48px),1200px);margin-inline:auto}.site-head{background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09);position:relative;z-index:20}.topbar{height:74px;display:flex;align-items:center;justify-content:space-between;position:relative}.menu-toggle{width:44px;height:44px;background:transparent;border:1px solid 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a{height:100%;display:flex;align-items:center;position:relative;flex-shrink:0;font-size:14px}.channel-inner a.active{color:#6EA8FF}.channel-inner a.active:after{content:"";position:absolute;bottom:0;left:0;right:0;height:2px;background:#6EA8FF}.drawer-overlay,.site-drawer{position:fixed;visibility:hidden;pointer-events:none;transition:transform .25s ease,opacity .25s ease,visibility .25s;z-index:30}.drawer-overlay{inset:0;background:rgba(0,0,0,.7);opacity:0}.site-drawer{left:0;top:0;bottom:0;width:min(430px,86vw);background:#0D1015;transform:translateX(-102%);overflow-y:auto;z-index:31;box-shadow:12px 0 48px rgba(0,0,0,.35)}.drawer-open{overflow:hidden}.drawer-open .drawer-overlay{visibility:visible;pointer-events:auto;opacity:1}.drawer-open .site-drawer{visibility:visible;pointer-events:auto;transform:translateX(0)}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-label{color:#fff;font-weight:700}.menu-close{width:40px;height:40px;border:1px solid rgba(255,255,255,.16);border-radius:10px;color:#fff;background:#171C23;font-size:26px;line-height:1;cursor:pointer}.nav-group{padding:18px 24px 10px;border-bottom:1px solid rgba(255,255,255,.09)}.nav-group h2{font-size:14px;color:#9098A3;margin:0 0 9px}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}.drawer-links a{padding:9px 10px;border-radius:8px;font-size:14px}.drawer-links a.active{color:#6EA8FF;background:#171C23;border-left:2px solid #6EA8FF}.hero{padding-block:50px 32px;display:grid;grid-template-columns:54fr 46fr;align-items:center;gap:36px}.hero-copy h1{max-width:650px}.eyebrow{color:#8ED8FF;font-size:13px;font-weight:700;letter-spacing:.1em;margin-bottom:12px}.lead{font-size:17px;color:#C7CDD5;line-height:1.85}.text-actions{display:flex;gap:23px;flex-wrap:wrap;margin-top:24px}.text-actions a{color:#8ED8FF;font-size:15px;font-weight:700}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#0D1015;border:1px solid rgba(255,255,255,.09)}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(130deg,#12161C,#171C23);border:1px solid rgba(255,255,255,.04)}.media-square{aspect-ratio:1/1}.media-wide{aspect-ratio:16/9}.media-banner{aspect-ratio:16/7}.media-device{aspect-ratio:9/16;max-width:210px;margin:auto}.hero .media{height:310px}.section{padding-block:34px 18px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:14px;margin-bottom:20px;border-bottom:1px solid rgba(255,255,255,.09);padding-bottom:12px}.section-head h2{margin:0}.section-head>a{font-size:14px;color:#8ED8FF;white-space:nowrap}.section-intro{max-width:790px}.panel{background:#12161C;border:1px solid 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h3{font-size:17px;margin:11px 0 4px}.visual-card p{font-size:14px;color:#9098A3;line-height:1.7}.number-list{list-style:none;counter-reset:section;padding:0;margin:0}.number-list li{counter-increment:section;padding:15px 0 15px 48px;border-bottom:1px solid rgba(255,255,255,.09);position:relative}.number-list li:before{content:counter(section,decimal-leading-zero);position:absolute;left:0;top:15px;color:#6EA8FF;font-weight:700}.number-list a{font-weight:700;color:#F5F7FA}.number-list p{font-size:14px;margin:3px 0 0}.content-main{padding-block:38px 55px}.breadcrumb{font-size:13px;color:#9098A3;margin-bottom:22px}.breadcrumb a{color:#8ED8FF}.page-intro{max-width:860px;margin-bottom:32px}.page-intro h1{font-size:clamp(24px,2.8vw,36px)}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:30px;align-items:start}.article-body{min-width:0;max-width:860px}.article-section{margin-bottom:30px;border-bottom:1px solid rgba(255,255,255,.09);padding-bottom:20px}.article-section h2{font-size:25px}.article-section p{line-height:1.84}.article-aside{position:sticky;top:20px}.article-aside h2{font-size:18px}.article-aside a{display:block;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.09);font-size:14px}.article-callout{border-left:3px solid #6EA8FF;background:#12161C;padding:18px 20px;margin:25px 0;border-radius:0 10px 10px 0}.topic-pics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-block:28px}.topic-pics .media{max-height:240px}.topic-pics figcaption{font-size:13px;color:#9098A3;margin-top:7px}.topic-pics figure{margin:0}.related{margin-top:32px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16)}.related h2{font-size:20px}.related-links{display:flex;flex-wrap:wrap;gap:10px}.related-links a{background:#171C23;color:#8ED8FF;padding:8px 13px;border-radius:8px;font-size:14px}.qa{padding:18px 0;border-bottom:1px solid rgba(255,255,255,.09)}.qa h2{font-size:19px;margin-bottom:8px}.qa p{margin-bottom:0}.banner-box{max-height:260px}.footer{background:#050608;margin-top:52px;padding-top:46px}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:26px}.footer-brand{font-size:23px;font-weight:700;color:#fff;min-height:42px}.footer-brand img{width:auto;max-width:160px;height:36px;object-fit:contain}.footer-grid h2{font-size:16px;margin-bottom:13px}.footer-grid a{display:block;font-size:14px;margin:5px 0}.footer-grid p{font-size:14px;color:#9098A3}.footer-bottom{display:flex;gap:20px;justify-content:space-between;border-top:1px solid rgba(255,255,255,.09);margin-top:30px;padding-block:22px;color:#9098A3;font-size:13px}.footer-bottom p{margin:0}.backtop{position:fixed;right:20px;bottom:20px;z-index:15;border:1px solid rgba(255,255,255,.16);background:#171C23;color:#fff;width:42px;height:42px;border-radius:50%;display:none;cursor:pointer}.backtop.is-visible{display:block}@media(max-width:980px){.container{width:min(calc(100% - 40px),1200px)}.hero{gap:22px}.info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.image-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.image-grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr) 230px;gap:22px}.footer-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:700px){body{font-size:15px}.container{width:calc(100% - 32px)}.topbar{height:64px}.brand{font-size:19px;max-width:calc(100% - 198px)}.brand img{max-width:100%;height:28px}.menu-toggle{width:40px;height:40px}.enter-btn{height:40px;padding:0 13px;font-size:12px}.channel-inner{height:45px;gap:20px}.hero{padding-top:25px;display:flex;flex-direction:column-reverse;align-items:stretch;gap:20px}.hero .media{height:205px}.hero h1{font-size:29px}.lead{font-size:15px}.section{padding-block:25px 12px}.section-head{align-items:center}.section-head h2{font-size:21px}.panel{padding:17px}.split,.split.equal{grid-template-columns:1fr}.info-grid{gap:12px}.info-grid.two{grid-template-columns:1fr}.image-grid{gap:12px}.visual-card .media{height:145px}.visual-card h3{font-size:16px}.visual-card p{font-size:13px}.editorial{padding:19px}.content-main{padding-block:26px 32px}.article-layout{display:block}.article-aside{position:static;margin-top:25px}.page-intro{margin-bottom:22px}.article-section h2{font-size:21px}.topic-pics{gap:12px}.topic-pics .media{max-height:195px}.footer{padding-top:30px;margin-top:30px}.footer-grid{gap:22px}.footer-bottom{display:block}.footer-bottom p{margin-top:8px}.media-banner{max-height:145px}}@media(max-width:360px){.brand{max-width:calc(100% - 186px);font-size:17px}.enter-btn{padding-inline:10px}.info-grid{grid-template-columns:1fr}.image-grid,.image-grid.three{grid-template-columns:repeat(2,minmax(0,1fr))}.visual-card .media{height:128px}}

/* Edition 2: editorial museum layout */
.hero{grid-template-columns:46fr 54fr;gap:46px}.hero-copy{order:2}.hero>.media{order:1}.section:nth-of-type(3n){background:#0D1015;border-radius:14px;padding:30px;margin-block:24px}.section-head{border-bottom:1px solid rgba(110,168,255,.25)}.info-grid .panel{border-top:2px solid #5C7CFA}.image-grid .visual-card{background:#12161C}.article-head{border-bottom:1px solid rgba(255,255,255,.12)}@media(max-width:720px){.hero{grid-template-columns:1fr;gap:18px}.hero-copy{order:2}.hero>.media{order:1}}